The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2012
Filed:
Feb. 11, 2009
Stephen Fung, Cupertino, CA (US);
Vithal Rao, San Jose, CA (US);
Da-guang Yu, Fremont, CA (US);
J. Eric Ruetz, Soquel, CA (US);
Chee T. Chua, Fremont, CA (US);
Jawji Chen, Fremont, CA (US);
Kameswara K. Rao, San Jose, CA (US);
Stephen Fung, Cupertino, CA (US);
Vithal Rao, San Jose, CA (US);
Da-Guang Yu, Fremont, CA (US);
J. Eric Ruetz, Soquel, CA (US);
Chee T. Chua, Fremont, CA (US);
Jawji Chen, Fremont, CA (US);
Kameswara K. Rao, San Jose, CA (US);
MoSys, Inc., Santa Clara, CA (US);
Abstract
A method for selectively refreshing data in a nonvolatile memory array based on failure type detected by an error correction code. If the page is determined to be error-free, no refresh operation takes place. Otherwise, if single-error words on a page contain erased and programmed bit errors, then a refresh operation, consisting of an erase and program, takes place. The erase operation is skipped if single-error words on a page solely contain a program failure.